River Processes

What is hydraulic action? Select the correct definition.

• small stones carried by the river wear away the banks and the bed of the river

• The stones hit off one another and break each other down

• Rocks, such as limestone, are dissolved by acids in the water.

• the physical force of the moving water wears away rock and soil from the banks and bed of the river

What is abrasion?

• small stones carried by the river wear away the banks and the bed of the river

• The stones hit off one another and break each other down.

• Rocks, such as limestone, are dissolved by acids in the water.

• the physical force of the moving water wears away rock and soil from the banks and bed of the river

What is attrition?

• Rocks, such as limestone, are dissolved by acids in the water

• The stones hit off one another and break each other down

• small stones carried by the river wear away the banks and the bed of the river

• the physical force of the moving water wears away rock and soil from the banks and bed of the river

What is solution?

• The stones hit off one another and break each other down

• small stones carried by the river wear away the banks and the bed of the river

• Rocks, such as limestone, are dissolved by acids in the water

• the physical force of the moving water wears away rock and soil from the banks and bed of the river

What is traction?

• large stones are rolled along the bed of the river

• smaller pebbles are bounced along the bed of the river

• Light materials such as sand and silt float along in the water. They are suspended in the water

• Other materials dissolve in the water and are carried along by the river

What is saltation?

• Other materials dissolve in the water and are carried along by the river

• smaller pebbles are bounced along the bed of the river

• large stones are rolled along the bed of the river

_____________ is when light materials are suspended in the water and carried along the river by its flow.

Solution is when materials are ____________ in the water and carried along by its flow.

Hydraulic action is a process of river ________.

River deposition is when a river ___________ its load somewhere.